E ‐ Data Recovery Glossary ECC – It is an acronym for Error Correction Code. The amalgamation of additional parity bits in broadcasted data to spot errors, which can be corrected by the controller. ECC On‐the‐Fly – A hardware modification method, which corrects errors in the read buffer previous to host transfer exclusive of any performance fines. These error corrections are not visible to the host system due to the fact that they do not need help from the drive’s firmware. EIDE (Enhanced Integrated Drive Electronics) – The principal interface used by desktop PCs to manage communication between hard drives and the central processing unit. The corresponding interface system in most venture systems is SCSI. Embedded Servo – A technique of using the space between segments (intersector gaps) on each data surface of a disc drive in order to present servo‐positioning data. This technique avails the same head to read both servo and data information, permitting all surfaces to be availed for data storage. Embedded Servo Control – The embedded servo control design makes precise feedback information to the head position servo system without needing a full data surface (which is need with a “dedicated” servo control method) due to the reason that servo control data is saved on every surface. Encoding‐ The practice of altering data patterns before writing them on the surface of the disk. Encrypted data – Data changed into cyphertext. Encryption is the safest method to guarantee the confidentiality of the data. Enterprise – The succession of computers engaged mostly in high‐volume and multi‐ user atmospheres like servers or networking applications; may comprise of single‐ user workstations needed in demanding design, engineering and audio/visual applications. Error Correction Code (ECC) – A mathematical algorithm, whose purpose is to spot and correct errors in a data field. Error Log – It is a record containing information about the errors. Error Rate – It can be defined as the amount of errors of a certain type that take place when interpretation of a specified number of bits is concerned.
Executable – A ready to be executed (run) machine language program in a binary file. In MS‐DOS and Windows “.exe” extension is used for these files. Extended Partition – You can craft many partitions on a hard disk, one primary or main partition and one or more additional extended partition(s). Operating system files must be located on the primary or main partition. non‐system files (files other than DOS or operating system files) can be stored on the extended partition part of the disk. You can also make logical drives on the extended partition. Extract – To extract means returning a compressed file to its original form. Usually, you have to extract a compressed file if you wish to view its contents. Expansion Card‐It is an integrated circuit card, which is plugged into an expansion slot on a motherboard in order to present a way in to additional features or options that are not already built into the motherboard. Also see adapter. Dolphin Data Lab http://www.dolphindatalab.com/